EP3374237B1 - Arrangement of an airbag device in a motor vehicle - Google Patents

Arrangement of an airbag device in a motor vehicle Download PDF

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Publication number
EP3374237B1
EP3374237B1 EP16809489.4A EP16809489A EP3374237B1 EP 3374237 B1 EP3374237 B1 EP 3374237B1 EP 16809489 A EP16809489 A EP 16809489A EP 3374237 B1 EP3374237 B1 EP 3374237B1
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EP
European Patent Office
Prior art keywords
airbag device
arrangement
airbag
vehicle
lining
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Application number
EP16809489.4A
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German (de)
French (fr)
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EP3374237A1 (en
Inventor
Loic JEGARD
Benjamin LEFEBVRE
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Renault SAS
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Renault SAS
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Publication of EP3374237A1 publication Critical patent/EP3374237A1/en
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Publication of EP3374237B1 publication Critical patent/EP3374237B1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/20—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components
    • B60R21/213—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components in vehicle roof frames or pillars
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/23—Inflatable members
    • B60R21/231—Inflatable members characterised by their shape, construction or spatial configuration
    • B60R21/232—Curtain-type airbags deploying mainly in a vertical direction from their top edge

Definitions

  • the present invention relates to an arrangement of an airbag device in a motor vehicle, as well as to a method of mounting the airbag device in said vehicle.
  • the invention also relates to a motor vehicle comprising at least one such arrangement of airbag device.
  • an airbag device 16 of the curtain airbag type generally comprises an inflation member 17a such as a gas generator, and an inflatable bag 17b folded / rolled up intended to inflate and deploy in a passenger compartment of the vehicle in particular during a frontal and / or lateral impact between passengers of the vehicle and the latter's side windows.
  • an inflation member 17a such as a gas generator
  • an inflatable bag 17b folded / rolled up intended to inflate and deploy in a passenger compartment of the vehicle in particular during a frontal and / or lateral impact between passengers of the vehicle and the latter's side windows.
  • an arrangement 10 of such an airbag device 16 comprises a stretcher beam 14 of the roof on which this device is mounted 16. More precisely, in this configuration, the member inflation 17a is fixed directly to fastening zones 18 defined on a lining 12 of the stretcher of the beam 14. In this arrangement 10 a headliner 13a is then arranged in the passenger compartment thus making it possible to conceal the airbag device 4 .
  • the present invention aims to overcome these drawbacks associated with the arrangements of airbag devices in vehicles of the prior art.
  • the invention relates to an arrangement of an airbag device in particular of the curtain airbag type in a motor vehicle defined by the characteristics of claim 1.
  • the invention also relates to a method of mounting an airbag device, in particular of the curtain airbag type, in a vehicle defined by the characteristics of claim 7.
  • the method comprises a step of assembling a mounting plate to the airbag device.
  • the method comprises a step of fixing the plate to the stretcher lining.
  • the invention also relates to a vehicle comprising at least one such arrangement.
  • X is the front-rear longitudinal direction of the vehicle directed towards the rear
  • Y is the right-left transverse direction.
  • Z is the vertical direction pointing to the top.
  • front, rear, right, left, horizontal, vertical, upper, lower are defined with respect to the direction of movement of the vehicle.
  • a motor vehicle comprises at least one arrangement 1 of an airbag device 4 in its passenger compartment.
  • Each arrangement 1 includes in a nonlimiting and nonexhaustive manner, a stretcher beam 2 of a roof of the vehicle, the airbag device 4 and a mounting plate 6.
  • the stretcher beam 2 also called the roof stretcher, extends longitudinally between the front and rear cross members of the vehicle structure.
  • the vehicle structure preferably comprises two stretcher beams 2.
  • the front and rear cross members extending transversely to the vehicle on either side of the roof, the primary function of which is to ensure the rigidity of the whole of the body structure.
  • the front crossmember is generally located at the intersection between the window posts and which frame and support the windshield and the stretcher beams 2 which extend longitudinally towards the rear of the roof to the rear crossmember.
  • This front cross member receives on a first front side the upper part of the windshield and on the second rear side the front end of the vehicle roof.
  • the rear roof cross member delimits the rear part of the roof of the rear window.
  • the stretcher beam 2 extends longitudinally between the front and rear crosspieces and this, along an upper part of a front and rear side door frame and possibly along an upper part of a quarter panel, that is to say along the upper part of a rear wing panel provided with a side window.
  • This stretcher beam 2 is usually assembled on the body by welding and thus forms a component part of the body, inseparable.
  • Each stretcher beam 2 ensures the transmission of forces and therefore the rigidity of the body of the motor vehicle between the upper part of a middle leg and the end of the front and rear cross members of the roof on the same side.
  • the stretcher beam 2 is usually a sheet metal part, made of steel or even aluminum alloy.
  • Each stretcher beam 2 is not visible outside it is hidden by different parts of the bodywork such as the roof or pieces 20 on the body side, and inside it is usually hidden by the interior trim of the passenger compartment such as a headliner 7 included in this arrangement 1.
  • the stretcher beam 2 comprises a stretcher reinforcement 3a and a stretcher lining 3b.
  • This reinforcement 3a and the lining 3b are assembled together so as to form an interior space 3c.
  • the stretcher lining 3b comprises an opening 21 and first fixing zones 8a.
  • This opening 21 visible on the figures 4, 5 and 6 is defined for a insertion of part of the airbag device 4 into the interior space 21 of the beam 2.
  • This part of the airbag device 4 corresponds to an inflation member 5a or even to this inflation member 5a and a first component 29a d an airbag 5b which are described below.
  • This opening 21 preferably has a generally rectangular shape and forms an access to the interior space 3c of the stretcher beam 2.
  • This opening 21 comprises an edge 28 at the level of which is defined a guide element 9 extending in a direction substantially transverse in the interior space of the stretcher beam 2 and this, towards the stretcher reinforcement 3a.
  • the edge 28 may be a dropped edge which is in particular coated with a rubber-type protective material.
  • the guide element 9 is preferably defined at a part of the edge 28 which is capable of being in contact with the airbag device 4 and in particular with the airbag 5b constituting the latter.
  • the first attachment zones 8a are arranged at the periphery of the opening 21 and preferably near the edge 28 of this opening 21.
  • the airbag device 4 comprises an inflation member 5a and the airbag 5b.
  • This inflation member 5a otherwise known as an airbag generator, is a gas generator suitable for this type of airbag device 4 which is suitable as soon as it receives an electrical control signal from a vehicle on-board computer relating to a frontal and / or lateral impact or when the vehicle experiences barrels as a result of the lateral impact, generating a high flow of gas, to deploy and inflate the bag 5b. Note that it can then provide for the generation of a lower gas flow rate for a predefined period to maintain the pressure in the bag 5b.
  • This inflation member 5a has a volume which is predefined to allow its insertion into the interior space 3c by passing through the opening 21 of the stretcher lining 3b. As illustrated by figures 4, 5 and 6 , it may have a tubular shape and a cross section of circular shape.
  • This inflator 5a is connected to the airbag 5b of this airbag device 4.
  • This airbag 5b comprises first and second components 29a, 29b.
  • This airbag 5b can be an airbag in the form of a curtain and is visible on the figures 4 to 8 folded in particular thus forming the second component 29b in order to have a thin shape so as to extend longitudinally in the front-rear direction of the vehicle.
  • the second component 29b of the inflatable bag 5b can have a tubular shape and have a circular section.
  • the inflation member 5a supplies the bag 5b with gas, the latter inflates in order to be deployed downwards along a surface on the interior side of the vehicle cabin.
  • the second component 29b of the inflatable bag 5b when folded may have a length which is greater than that of the inflation member 5a.
  • This bag 5b can be made of flexible material such as a thermoplastic elastomer (TPE), also called thermoplastic rubber.
  • TPE thermoplastic elastomer
  • the airbag 5b is connected to the inflation member 5a, in particular at the level of the first component 29a, visible on the Figures 5 to 8 .
  • This first component 29a comprises a first end which is defined at the level of an external wall of the second component 29b, in particular the cylindrical external wall of the latter, and a second end which is connected to one end of the inflation member 5a in continuation of the extension of the latter.
  • Such a first component 29a is designed to be inserted partly into the interior space 3c of the stretcher beam 2, taking particular support at a contact zone on the guide element 9.
  • the element of guide 9 directs the first component 29a when it is deployed, towards the outside of the interior space 3c thus avoiding that this first component 29a does not extend into this interior space 3c during the deployment of the airbag 5b.
  • this guide element 9 also prevents the edge 28 of the opening 21 from damaging the first component 29a during this deployment of the bag 5b.
  • central axes A1, A2 of respectively the inflation member 5a and the second component 29b of the airbag 5b visible on the Figures 4 and 5 are substantially parallel to each other.
  • This airbag device 4 preferably makes it possible to prevent a passenger from the vehicle from being thrown outside the vehicle at a longitudinal end of the latter. Thanks to the airbag 5b in particular, it has an excellent shock absorption function (damping properties) that a passenger receives inside the vehicle.
  • the mounting plate 6 is in particular capable of securing the airbag device 4 to the stretcher lining 3b.
  • This mounting plate 6 has a particular general shape which is defined so that this plate 6 ensures, when it is mounted on the stretcher lining 3b, that the opening 21 is closed off while allowing the passage of the second component 29b of the interior space 2 towards the first component 29a of the airbag 5b.
  • this plate 6 can have a generally rectangular shape and comprises two plane faces which are parallel to each other. It can be made of rigid material, for example metal or plastic.
  • the plate 6 also comprises an arrangement zone 23 of the first component 29a of the inflatable bag 5b which is defined to partially surround an outline of this first component 29a.
  • This arrangement zone 23 may have the form of a "U".
  • This arrangement zone 23 includes an edge 24 in particular a fallen edge which can be coated with a protective material such as rubber, which makes it possible to avoid damage to the first component 29a of the bag 5b by this edge 24, in particular when deploying the bag 5b.
  • the plate 6 also includes second and third attachment zones 8b, 8c.
  • the second fixing zones 8b are arranged on the plate 6 so as to cooperate in a complementary manner with the first fixing zones 8a of the lining 3b during the assembly of the plate 6 to this lining 3b.
  • these first and second attachment zones 8a, 8b are located opposite one another.
  • the plate 6 preferably comprises as many second attachment zones 8b as the lining 3b comprises first attachment zones 8a.
  • These second attachment zones 8b are preferably located near the edge 30 of this plate 6.
  • the third attachment zones 8c are defined to participate in the mounting of the inflation member 5a on the plate 6.
  • first and second attachment zones 8a, 8b are mechanically connected to each other from attachment elements 27 visible on the figure 4 .
  • These fixing elements 27 can be welding points, rivets or even cooperating screws with holes included in the first and second fixing zones 8a, 8b.
  • the third fixing zones 8c are mechanically connected with the inflation member 5a by fixing elements such as clamps located around this member 5a which cooperate with holes included in these third fixing zones 8c as well as screws directed towards the interior of the vehicle fixed on the plate 6 by a cap nut so as not to damage the bag 5b.
  • the plate 6 may include an orifice 25 in which a connector 26b can be arranged or through which an electrical cable 26a comprising such a connector 26b can be positioned.
  • the connector 26b is then connected to the on-board computer of the vehicle which controls the triggering of the airbag device 4.
  • the arrangement 1 also includes a headliner 7 which makes it possible to conceal the airbag device 4 thus mounted in the passenger compartment of the vehicle.
  • the invention also relates to a method of mounting the airbag device 4 in the motor vehicle.
  • This method comprises a step of assembling 31 of the mounting plate 6 to the airbag device 4.
  • the inflation member 5a is mechanically connected to the plate 6 at the level of the third attachment zones 8c of the latter from the fastening elements, after an arrangement of the first component 29a of the bag 5b in the arrangement area 23 of the plate 6.
  • the method then provides for a step of arrangement 32 of a part of the airbag device 4, in particular the inflation member 5a, in the interior space 3c of the beam 2. More precisely, this part of the airbag device 4 may correspond to the inflation member 5a and to the part of the first component 29a of the airbag 5b in this interior space 3c of the stretcher beam 2.
  • This step 32 provides for insertion of the inflation member 5a and the part of the first component 29a in this interior space 3c by crossing the opening 21.
  • the plate 6 is interposed between the inflation member 5a and the second component 29b of the bag 5b.
  • the method provides for an attachment step 33 of the plate 6 on the lining 3a during which the first and second attachment zones 8a, 8b are mechanically connected to each other from the connecting elements 27.
  • the method then provides for a step of mounting 34 of the headlining in a passenger compartment of the vehicle which hides the airbag device 4 from the view of the passengers located in the passenger compartment.
  • such an arrangement 1 of the airbag device 4 in the vehicle makes it possible to reduce the size of the airbag device 4 in the vehicle and in particular in the passenger compartment of the vehicle.
  • the headlining 7 can thus have a shape which offers a greater space in the passenger compartment than the lining 13b relating to the arrangement of the state of the art, due in particular to the arrangement of part of this airbag device 4 in the interior space 3c of the stretcher beam 2.
  • the head 15 of the passenger of the vehicle is moved away by a distance E3 from the headliner 7 thus allowing optimal mobility of this last in the passenger compartment.
  • This difference E3 is greater than the difference E2 of the state of the art between the lining of the roof 13a and the head 15 of the passenger. Passenger comfort is thus improved.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Air Bags (AREA)

Description

La présente invention concerne un arrangement d'un dispositif d'airbag dans un véhicule automobile, ainsi qu'un procédé de montage du dispositif d'airbag dans ledit véhicule.The present invention relates to an arrangement of an airbag device in a motor vehicle, as well as to a method of mounting the airbag device in said vehicle.

L'invention concerne également un véhicule automobile comprenant au moins un tel arrangement de dispositif d'airbag.The invention also relates to a motor vehicle comprising at least one such arrangement of airbag device.

En référence aux figures 1 à 3, un dispositif d'airbag 16 du type airbag rideau, comprend de manière générale un organe de gonflage 17a tel qu'un générateur de gaz, et un sac gonflable 17b plié/enroulé destiné à se gonfler et se déployer dans un habitacle du véhicule notamment lors d'un choc frontal et/ou latéral et ce, entre des passagers du véhicule et des vitres latérales de ce dernier.With reference to Figures 1 to 3 , an airbag device 16 of the curtain airbag type, generally comprises an inflation member 17a such as a gas generator, and an inflatable bag 17b folded / rolled up intended to inflate and deploy in a passenger compartment of the vehicle in particular during a frontal and / or lateral impact between passengers of the vehicle and the latter's side windows.

Il est connu dans l'état de la technique qu'un arrangement 10 d'un tel dispositif d'airbag 16 comprend une poutre de brancard 14 de pavillon sur laquelle est monté ce dispositif 16. Plus précisément, dans cette configuration, l'organe de gonflage 17a est fixé directement sur des zones de fixation 18 définies sur une doublure 12 de brancard de la poutre 14. Dans cet arrangement 10 une garniture de pavillon 13a est ensuite agencée dans l'habitacle permettant ainsi de dissimuler le dispositif d'airbag 4.It is known in the prior art that an arrangement 10 of such an airbag device 16 comprises a stretcher beam 14 of the roof on which this device is mounted 16. More precisely, in this configuration, the member inflation 17a is fixed directly to fastening zones 18 defined on a lining 12 of the stretcher of the beam 14. In this arrangement 10 a headliner 13a is then arranged in the passenger compartment thus making it possible to conceal the airbag device 4 .

Toutefois, un tel arrangement 10 a pour inconvénient majeur d'occasionner un encombrement important dans l'habitacle du véhicule engendrant ainsi une dégradation de la mobilité et du confort des passagers du véhicule notamment de celles de leur tête. En effet, en référence à la figure 1, l'écart E2 entre le passager et notamment sa tête, et la garniture de pavillon 13a lorsque le dispositif d'airbag 16 est agencé dans le véhicule, est fortement réduit en comparaison avec un écart E1 entre une garniture de pavillon 13b et ce passager lorsque le véhicule est dépourvu de ce dispositif d'airbag 16.However, such an arrangement 10 has the major drawback of causing considerable bulk in the passenger compartment of the vehicle, thus causing a deterioration in the mobility and comfort of the passengers of the vehicle, in particular that of their head. Indeed, with reference to the figure 1 , the gap E2 between the passenger and in particular his head, and the headlining 13a when the airbag device 16 is arranged in the vehicle, is greatly reduced in comparison with a difference E1 between a headlining 13b and this passenger when the vehicle is without this airbag device 16.

En complément, on notera qu'au regard de la réglementation présente et à venir en la matière, un tel écart E2 est amené à se réduire encore plus. En effet, la réglementation requiert l'utilisation d'organes de gonflage de taille de plus en plus importante et un positionnement longitudinal du sac gonflable dans le véhicule pour garantir un déploiement efficace du sac avant et arrière. De plus, cette réglementation prévoit que de tels dispositifs d'airbag doivent être implémentés dorénavant et de manière systématique dans toutes les catégories de véhicules notamment dans les véhicules de petites catégories tels que les micro-urbaines B0 ou encore les mini-citadines B1 qui en étaient pour certaines dépourvues du fait notamment d'un volume intérieur de l'habitacle déjà restreint. Le document US 2008/0088120 A1 révèle un arrangement d'un dispositif d'airbag, où un passage donnant accès à l'espace de positionnement de l'organe de gonflage du dispositif d'airbag est défini entre le panneau de côté intérieur et le panneau de côté extérieur.In addition, it should be noted that with regard to the present and future regulations in the matter, such a difference E2 is bound to be reduced even more. Indeed, the regulations require the use of inflating members of increasingly large size and a longitudinal positioning of the airbag in the vehicle to guarantee an effective deployment of the front and rear bag. In addition, this regulation provides that such airbag devices must be implemented from now on and systematically in all categories of vehicles, especially in vehicles of small categories such as micro-urban B0 or mini-city B1 which were for some lacking due in particular to an interior volume of the cabin already limited. The document US 2008/0088120 A1 discloses an arrangement of an airbag device, where a passage giving access to the positioning space of the inflating member of the airbag device is defined between the interior side panel and the exterior side panel.

La présente invention vise à pallier ces inconvénients liés aux arrangements de dispositifs d'airbag dans les véhicules de l'art antérieur.The present invention aims to overcome these drawbacks associated with the arrangements of airbag devices in vehicles of the prior art.

Dans ce dessein, l'invention concerne un arrangement d'un dispositif d'airbag notamment du type airbag rideau dans un véhicule automobile défini par les caractéristiques de la revendication 1.In this design, the invention relates to an arrangement of an airbag device in particular of the curtain airbag type in a motor vehicle defined by the characteristics of claim 1.

Dans d'autres modes de réalisation :

  • l'arrangement comprend une plaque de montage apte à assurer la fixation du dispositif d'airbag à la doublure de brancard ;
  • une plaque de montage comprend au moins une deuxième zone de fixation prévu pour une fixation de ladite plaque de montage à la doublure de brancard ;
  • une plaque de montage comprend au moins une troisième zone de fixation au niveau de laquelle l'organe de gonflage est fixé à ladite plaque ;
  • une plaque de montage comprend une zone d'agencement d'une première composante d'un sac gonflable du dispositif d'airbag ;
  • la plaque comprend un orifice dans lequel est agencée une connectique ou au travers duquel un câble électrique comprenant une telle connectique peut être positionné ;
  • une ouverture comprend un bord notamment revêtu d'un matériau de protection tel que du caoutchouc, et
  • une ouverture comprend un bord au niveau duquel est défini un élément de guidage.
In other embodiments:
  • the arrangement includes a mounting plate capable of securing the airbag device to the stretcher lining;
  • a mounting plate comprises at least a second fixing zone provided for fixing said mounting plate to the stretcher lining;
  • a mounting plate comprises at least a third fixing zone at the level of which the inflation member is fixed to said plate;
  • a mounting plate includes an area for arranging a first component of an airbag of the airbag device;
  • the plate comprises an orifice in which a connector is arranged or through which an electric cable comprising such a connector can be positioned;
  • an opening comprises an edge notably coated with a protective material such as rubber, and
  • an opening includes an edge at which a guide element is defined.

L'invention concerne également un procédé de montage d'un dispositif d'airbag notamment du type airbag rideau dans un véhicule défini par les caractéristiques de la revendication 7.The invention also relates to a method of mounting an airbag device, in particular of the curtain airbag type, in a vehicle defined by the characteristics of claim 7.

Avantageusement, le procédé comprend une étape d'assemblage d'une plaque de montage au dispositif d'airbag.Advantageously, the method comprises a step of assembling a mounting plate to the airbag device.

En particulier, le procédé comprend une étape de fixation de la plaque sur la doublure de brancard.In particular, the method comprises a step of fixing the plate to the stretcher lining.

L'invention concerne aussi un véhicule comprenant au moins un tel arrangement.The invention also relates to a vehicle comprising at least one such arrangement.

D'autres avantages et caractéristiques de l'invention apparaîtront mieux à la lecture de la description d'un mode de réalisation préféré qui va suivre, en référence aux figures, réalisé à titre d'exemple indicatif et non limitatif :

  • la figure 1 représente une vue en coupe transversale d'une partie du véhicule comportant un arrangement du dispositif d'airbag sur la poutre de brancard du pavillon du véhicule automobile dans l'art antérieur ;
  • la figure 2 est une vue schématique d'une doublure de brancard de la poutre de brancard et d'un dispositif d'airbag susceptible d'être monté sur ladite doublure dans l'art antérieur ;
  • la figure 3 représente une vue schématique du dispositif d'airbag monté sur la doublure de brancard dans l'art antérieur ;
  • la figure 4 représente une vue en coupe transversale d'une partie d'un véhicule comportant un arrangement d'un dispositif d'airbag sur une poutre de brancard d'un pavillon du véhicule automobile, selon un mode de réalisation de l'invention ;
  • la figure 5 est une vue schématique d'une doublure de brancard de la poutre de brancard, du dispositif d'airbag et d'une plaque de montage susceptibles d'être montés sur ladite doublure, selon le mode de réalisation de l'invention ;
  • la figure 6 est une vue schématique de la plaque de montage assemblée au dispositif d'airbag, et de la doublure de brancard, selon le mode de réalisation de l'invention ;
  • les figures 7A et 7B sont des vues schématiques de la plaque de montage assemblée au dispositif d'airbag, la plaque comprenant un orifice permettant le passage/agencement d'un élément de connexion électrique, selon le mode de réalisation de l'invention ;
  • la figure 8 représente une vue schématique du dispositif d'airbag et de la plaque de montage montés sur la doublure de brancard, selon le mode de réalisation de l'invention, et
  • la figure 9 est une représentation schématique d'un procédé de montage du dispositif d'airbag dans le véhicule automobile.
Other advantages and characteristics of the invention will appear better on reading the description of a preferred embodiment which will follow, with reference to the figures, produced by way of indicative and nonlimiting example:
  • the figure 1 shows a cross-sectional view of a part of the vehicle comprising an arrangement of the airbag device on the stretcher beam of the roof of the motor vehicle in the prior art;
  • the figure 2 is a schematic view of a stretcher lining of the stretcher beam and of an airbag device capable of being mounted on said lining in the prior art;
  • the figure 3 shows a schematic view of the airbag device mounted on the stretcher lining in the prior art;
  • the figure 4 shows a cross-sectional view of a part of a vehicle comprising an arrangement of an airbag device on a stretcher beam of a roof of the motor vehicle, according to an embodiment of the invention;
  • the figure 5 is a schematic view of a stretcher lining of the stretcher beam, the airbag device and a mounting plate capable of being mounted on said lining, according to the embodiment of the invention;
  • the figure 6 is a schematic view of the mounting plate assembled to the airbag device, and of the stretcher lining, according to the embodiment of the invention;
  • the Figures 7A and 7B are schematic views of the mounting plate assembled to the airbag device, the plate comprising an orifice allowing the passage / arrangement of an electrical connection element, according to the embodiment of the invention;
  • the figure 8 shows a schematic view of the airbag device and the mounting plate mounted on the stretcher lining, according to the embodiment of the invention, and
  • the figure 9 is a schematic representation of a method of mounting the airbag device in the motor vehicle.

La description est faite en référence à un repère orthonormé (X, Y, Z) associé classiquement à un véhicule automobile, dans lequel X est la direction longitudinale avant-arrière du véhicule dirigée vers l'arrière, Y est la direction transversale droite-gauche au véhicule, qui est horizontale et perpendiculaire à X, dirigée vers la droite, et Z est la direction verticale dirigée vers le dessus. Par ailleurs, les termes « avant, arrière, droit, gauche, horizontal, vertical, supérieur, inférieur » sont définis par rapport au sens de déplacement du véhicule.The description is made with reference to an orthonormal reference frame (X, Y, Z) conventionally associated with a motor vehicle, in which X is the front-rear longitudinal direction of the vehicle directed towards the rear, Y is the right-left transverse direction. to the vehicle, which is horizontal and perpendicular to X, pointing to the right, and Z is the vertical direction pointing to the top. Furthermore, the terms "front, rear, right, left, horizontal, vertical, upper, lower" are defined with respect to the direction of movement of the vehicle.

Dans un mode de réalisation de l'invention, un véhicule automobile comprend au moins un arrangement 1 d'un dispositif d'airbag 4 dans son habitacle. Chaque arrangement 1 comprend de manière non limitative et non exhaustive, une poutre de brancard 2 d'un pavillon du véhicule, le dispositif d'airbag 4 et une plaque de montage 6.In one embodiment of the invention, a motor vehicle comprises at least one arrangement 1 of an airbag device 4 in its passenger compartment. Each arrangement 1 includes in a nonlimiting and nonexhaustive manner, a stretcher beam 2 of a roof of the vehicle, the airbag device 4 and a mounting plate 6.

La poutre de brancard 2 encore appelée brancard de pavillon, s'étend longitudinalement entre des traverses avant et arrière de la structure du véhicule. La structure du véhicule comprend de préférence deux poutres de brancard 2. Les traverses avant et arrière, s'étendant transversalement au véhicule de part et d'autre du toit, dont la première fonction est d'assurer la rigidité de l'ensemble de la structure de la carrosserie. La traverse avant se trouve généralement au croisement entre les montants de baie et qui encadrent et soutiennent le pare-brise et les poutres de brancard 2 qui s'étendent longitudinalement vers l'arrière du pavillon jusqu'à la traverse arrière. Cette traverse avant reçoit sur un premier côté avant la partie supérieure du pare-brise et sur le second côté arrière l'extrémité avant du toit du véhicule. De manière semblable, la traverse arrière de pavillon délimite la partie arrière du toit de la lunette arrière.The stretcher beam 2, also called the roof stretcher, extends longitudinally between the front and rear cross members of the vehicle structure. The vehicle structure preferably comprises two stretcher beams 2. The front and rear cross members, extending transversely to the vehicle on either side of the roof, the primary function of which is to ensure the rigidity of the whole of the body structure. The front crossmember is generally located at the intersection between the window posts and which frame and support the windshield and the stretcher beams 2 which extend longitudinally towards the rear of the roof to the rear crossmember. This front cross member receives on a first front side the upper part of the windshield and on the second rear side the front end of the vehicle roof. Similarly, the rear roof cross member delimits the rear part of the roof of the rear window.

Ainsi que nous l'avons vu précédemment, la poutre de brancard 2 s'étend longitudinalement entre les traverses avant et arrière et ce, le long d'une partie supérieure d'un encadrement de porte latérale avant et arrière et éventuellement le long d'une partie supérieure d'une custode, c'est-à-dire le long de la partie supérieure d'un panneau d'aile arrière muni d'une vitre latérale. Cette poutre de brancard 2 est habituellement assemblée sur la caisse par soudage et forme ainsi une pièce constitutive de la caisse, indissociable. Chaque poutre de brancard 2 assure la transmission des efforts et donc la rigidité de la caisse du véhicule automobile entre la partie supérieure d'un pied milieu et l'extrémité des traverses avant et arrière de pavillon du même côté. La poutre de brancard 2 est habituellement une pièce de tôlerie, en acier voire en alliage d'aluminium. Chaque poutre de brancard 2 n'est pas visible à l'extérieur elle est cachée par différentes pièces de la carrosserie telles que le pavillon ou des pièces 20 du côté de caisse, et à l'intérieur elle est habituellement masquée par l'habillage intérieur de l'habitacle telle qu'une garniture 7 de pavillon comprise dans cette arrangement 1.As we have seen previously, the stretcher beam 2 extends longitudinally between the front and rear crosspieces and this, along an upper part of a front and rear side door frame and possibly along an upper part of a quarter panel, that is to say along the upper part of a rear wing panel provided with a side window. This stretcher beam 2 is usually assembled on the body by welding and thus forms a component part of the body, inseparable. Each stretcher beam 2 ensures the transmission of forces and therefore the rigidity of the body of the motor vehicle between the upper part of a middle leg and the end of the front and rear cross members of the roof on the same side. The stretcher beam 2 is usually a sheet metal part, made of steel or even aluminum alloy. Each stretcher beam 2 is not visible outside it is hidden by different parts of the bodywork such as the roof or pieces 20 on the body side, and inside it is usually hidden by the interior trim of the passenger compartment such as a headliner 7 included in this arrangement 1.

La poutre de brancard 2 comprend un renfort 3a de brancard et une doublure 3b de brancard. Ce renfort 3a et la doublure 3b sont assemblés ensemble de sorte à former un espace intérieure 3c. La doublure 3b de brancard comprend une ouverture 21 et des premières zones de fixation 8a.The stretcher beam 2 comprises a stretcher reinforcement 3a and a stretcher lining 3b. This reinforcement 3a and the lining 3b are assembled together so as to form an interior space 3c. The stretcher lining 3b comprises an opening 21 and first fixing zones 8a.

Cette ouverture 21 visible sur les figures 4, 5 et 6, est définie pour une insertion d'une partie du dispositif d'airbag 4 dans l'espace intérieure 21 de la poutre 2. Cette partie du dispositif d'airbag 4 correspond à un organe de gonflage 5a voire à cet organe de gonflage 5a et une première composante 29a d'un sac gonflable 5b qui sont décrits par la suite. Cette ouverture 21 a de préférence une forme générale rectangulaire et forme un accès à l'espace intérieur 3c de la poutre de brancard 2. Cette ouverture 21 comprend un bord 28 au niveau duquel est défini un élément de guidage 9 s'étendant selon une direction sensiblement transversale dans l'espace intérieur de la poutre de brancard 2 et ce, vers le renfort de brancard 3a. Le bord 28 peut être un bord tombé qui est notamment revêtu par un matériau de protection de type caoutchouc. L'élément de guidage 9 est de préférence défini au niveau d'une partie du bord 28 qui est susceptible d'être en contact avec le dispositif d'airbag 4 et en particulier avec le sac gonflable 5b constituant ce dernier.This opening 21 visible on the figures 4, 5 and 6 , is defined for a insertion of part of the airbag device 4 into the interior space 21 of the beam 2. This part of the airbag device 4 corresponds to an inflation member 5a or even to this inflation member 5a and a first component 29a d an airbag 5b which are described below. This opening 21 preferably has a generally rectangular shape and forms an access to the interior space 3c of the stretcher beam 2. This opening 21 comprises an edge 28 at the level of which is defined a guide element 9 extending in a direction substantially transverse in the interior space of the stretcher beam 2 and this, towards the stretcher reinforcement 3a. The edge 28 may be a dropped edge which is in particular coated with a rubber-type protective material. The guide element 9 is preferably defined at a part of the edge 28 which is capable of being in contact with the airbag device 4 and in particular with the airbag 5b constituting the latter.

Les premières zones de fixation 8a sont agencées au niveau du pourtour de l'ouverture 21 et de préférence à proximité du bord 28 de cette ouverture 21.The first attachment zones 8a are arranged at the periphery of the opening 21 and preferably near the edge 28 of this opening 21.

Le dispositif d'airbag 4 comprend un organe de gonflage 5a et le sac gonflable 5b. Cet organe de gonflage 5a autrement appelé générateur d'airbag, est un générateur de gaz adapté à ce type de dispositif d'airbag 4 qui est apte dès qu'il reçoit un signal électrique de commande d'un ordinateur de bord du véhicule relative à un choc frontal et/ou latéral ou lorsque le véhicule subit des tonneaux à la suite du choc latéral, de générer un fort débit de gaz, pour déployer et gonfler le sac 5b. On notera qu'il peut prévoir ensuite la génération d'un débit de gaz plus faible pendant une durée prédéfinie pour maintenir la pression dans le sac 5b.The airbag device 4 comprises an inflation member 5a and the airbag 5b. This inflation member 5a, otherwise known as an airbag generator, is a gas generator suitable for this type of airbag device 4 which is suitable as soon as it receives an electrical control signal from a vehicle on-board computer relating to a frontal and / or lateral impact or when the vehicle experiences barrels as a result of the lateral impact, generating a high flow of gas, to deploy and inflate the bag 5b. Note that it can then provide for the generation of a lower gas flow rate for a predefined period to maintain the pressure in the bag 5b.

Cet organe de gonflage 5a a un volume qui est prédéfini pour permettre son insertion dans l'espace intérieur 3c en traversant l'ouverture 21 de la doublure 3b de brancard. Ainsi que l'illustrent les figures 4, 5 et 6, il peut avoir une forme tubulaire et une section transversale de forme circulaire.This inflation member 5a has a volume which is predefined to allow its insertion into the interior space 3c by passing through the opening 21 of the stretcher lining 3b. As illustrated by figures 4, 5 and 6 , it may have a tubular shape and a cross section of circular shape.

Cet organe de gonflage 5a est relié au sac gonflable 5b de ce dispositif d'airbag 4. Ce sac gonflable 5b comprend des première et deuxième composantes 29a, 29b. Ce sac gonflable 5b peut être un coussin gonflable sous forme de rideau et est visible sur les figures 4 à 8 plié en formant notamment ainsi la deuxième composante 29b afin d'avoir une forme peu épaisse de façon à s'étendre longitudinalement selon la direction avant-arrière du véhicule. En étant ainsi plié, la deuxième composante 29b du sac gonflable 5b peut avoir une forme tubulaire et présenter une section circulaire. Lorsque l'organe de gonflage 5a alimente le sac 5b avec du gaz, ce dernier se gonfle afin d'être déployé vers le bas le long d'une surface du côté intérieur de l'habitacle du véhicule. Ainsi que l'illustre les figures 4 à 6, la deuxième composante 29b du sac gonflable 5b lorsqu'il est plié, peut présenter une longueur qui est supérieure à celle de l'organe de gonflage 5a. Ce sac 5b peut être réalisé en matériau souple tel qu'un élastomère thermoplastique (TPE), appelé également caoutchouc thermoplastique.This inflator 5a is connected to the airbag 5b of this airbag device 4. This airbag 5b comprises first and second components 29a, 29b. This airbag 5b can be an airbag in the form of a curtain and is visible on the figures 4 to 8 folded in particular thus forming the second component 29b in order to have a thin shape so as to extend longitudinally in the front-rear direction of the vehicle. By being thus folded, the second component 29b of the inflatable bag 5b can have a tubular shape and have a circular section. When the inflation member 5a supplies the bag 5b with gas, the latter inflates in order to be deployed downwards along a surface on the interior side of the vehicle cabin. As illustrated by figures 4 to 6 , the second component 29b of the inflatable bag 5b when folded, may have a length which is greater than that of the inflation member 5a. This bag 5b can be made of flexible material such as a thermoplastic elastomer (TPE), also called thermoplastic rubber.

Ainsi que nous l'avons vu, le sac gonflable 5b est relié à l'organe de gonflage 5a, en particulier au niveau de la première composante 29a, visible sur les figures 5 à 8. Cette première composante 29a comprend une première extrémité qui est définie au niveau d'une paroi extérieure de la deuxième composante 29b, notamment la paroi extérieure cylindrique de cette dernière, et une deuxième extrémité qui est reliée à une extrémité de l'organe de gonflage 5a dans la continuité du prolongement de ce dernier. Une telle première composante 29a est prévue pour être insérée en partie dans l'espace intérieur 3c de la poutre de brancard 2 en prenant notamment appui au niveau d'une zone de contact sur l'élément de guidage 9. Ainsi, l'élément de guidage 9 dirige la première composante 29a lorsqu'elle se déploie, vers l'extérieur de l'espace intérieure 3c évitant ainsi que cette première composante 29a ne s'étende dans cette espace intérieur 3c lors du déploiement du sac gonflable 5b. De plus cet élément de guidage 9 évite également que le bord 28 de l'ouverture 21 ne vienne endommager la première composante 29a lors de ce déploiement du sac 5b.As we have seen, the airbag 5b is connected to the inflation member 5a, in particular at the level of the first component 29a, visible on the Figures 5 to 8 . This first component 29a comprises a first end which is defined at the level of an external wall of the second component 29b, in particular the cylindrical external wall of the latter, and a second end which is connected to one end of the inflation member 5a in continuation of the extension of the latter. Such a first component 29a is designed to be inserted partly into the interior space 3c of the stretcher beam 2, taking particular support at a contact zone on the guide element 9. Thus, the element of guide 9 directs the first component 29a when it is deployed, towards the outside of the interior space 3c thus avoiding that this first component 29a does not extend into this interior space 3c during the deployment of the airbag 5b. In addition, this guide element 9 also prevents the edge 28 of the opening 21 from damaging the first component 29a during this deployment of the bag 5b.

On notera que dans cette configuration du dispositif d'airbag 2, des axes centraux A1, A2 de respectivement l'organe de gonflage 5a et la deuxième composante 29b du sac gonflable 5b visibles sur les figures 4 et 5, sont sensiblement parallèles entre eux.It will be noted that in this configuration of the airbag device 2, central axes A1, A2 of respectively the inflation member 5a and the second component 29b of the airbag 5b visible on the Figures 4 and 5 , are substantially parallel to each other.

Ce dispositif d'airbag 4 permet de préférence d'empêcher qu'un passager du véhicule ne soit projeté à l'extérieur du véhicule au niveau d'une extrémité longitudinale de celui-ci. Il présente grâce notamment au sac gonflable 5b, une excellente fonction d'absorption des chocs (propriétés d'amortissement) que reçoit un passager à l'intérieur du véhicule.This airbag device 4 preferably makes it possible to prevent a passenger from the vehicle from being thrown outside the vehicle at a longitudinal end of the latter. Thanks to the airbag 5b in particular, it has an excellent shock absorption function (damping properties) that a passenger receives inside the vehicle.

Dans cet arrangement 1, la plaque de montage 6 est notamment apte à assurer la fixation du dispositif d'airbag 4 à la doublure de brancard 3b. Cette plaque de montage 6 a une forme générale particulière qui est définie pour que cette plaque 6 assure lorsqu'elle est montée sur la garniture de brancard 3b, une obturation de l'ouverture 21 tout en autorisant le passage de la deuxième composante 29b de l'espace intérieur 2 vers la première composante 29a du sac gonflable 5b. Dans le présente mode de réalisation, cette plaque 6 peut avoir une forme générale rectangulaire et comprend deux faces planes et parallèles entre elles. Elle peut être réalisée en matériau rigide par exemple en métal ou encore en plastique. En référence à la figure 5, la plaque 6 comprend également une zone d'agencement 23 de la première composante 29a du sac gonflable 5b qui est définie pour entourer partiellement un contour de cette première composante 29a. Cette zone d'agencement 23 peut avoir la forme d'un « U ». Cette zone d'agencement 23 comprend un bord 24 notamment un bord tombé qui peut être revêtu d'un matériau de protection tel que du caoutchouc, qui permet d'éviter un endommagement de la première composante 29a du sac 5b par ce bord 24, notamment lors du déploiement du sac 5b.In this arrangement 1, the mounting plate 6 is in particular capable of securing the airbag device 4 to the stretcher lining 3b. This mounting plate 6 has a particular general shape which is defined so that this plate 6 ensures, when it is mounted on the stretcher lining 3b, that the opening 21 is closed off while allowing the passage of the second component 29b of the interior space 2 towards the first component 29a of the airbag 5b. In the present embodiment, this plate 6 can have a generally rectangular shape and comprises two plane faces which are parallel to each other. It can be made of rigid material, for example metal or plastic. With reference to the figure 5 , the plate 6 also comprises an arrangement zone 23 of the first component 29a of the inflatable bag 5b which is defined to partially surround an outline of this first component 29a. This arrangement zone 23 may have the form of a "U". This arrangement zone 23 includes an edge 24 in particular a fallen edge which can be coated with a protective material such as rubber, which makes it possible to avoid damage to the first component 29a of the bag 5b by this edge 24, in particular when deploying the bag 5b.

La plaque 6 comprend également des deuxièmes et troisièmes zones de fixation 8b, 8c. Les deuxièmes zones de fixation 8b sont agencées sur la plaque 6 de manière à coopérer de façon complémentaire avec les premières zones de fixation 8a de la doublure 3b lors de l'assemblage de la plaque 6 à cette doublure 3b. Lorsque la plaque 6 est assemblée à la doublure 3b, ces premières et deuxièmes zones de fixation 8a, 8b sont situées en regard les unes des autres. La plaque 6 comprend de préférence autant de deuxième zone de fixation 8b que la doublure 3b comprend de premières zones de fixation 8a. Ces deuxièmes zones de fixation 8b sont situées de préférence à proximité du bord 30 de cette plaque 6. Les troisièmes zones de fixation 8c sont définies pour participer au montage de l'organe de gonflage 5a sur la plaque 6.The plate 6 also includes second and third attachment zones 8b, 8c. The second fixing zones 8b are arranged on the plate 6 so as to cooperate in a complementary manner with the first fixing zones 8a of the lining 3b during the assembly of the plate 6 to this lining 3b. When the plate 6 is assembled to the lining 3b, these first and second attachment zones 8a, 8b are located opposite one another. The plate 6 preferably comprises as many second attachment zones 8b as the lining 3b comprises first attachment zones 8a. These second attachment zones 8b are preferably located near the edge 30 of this plate 6. The third attachment zones 8c are defined to participate in the mounting of the inflation member 5a on the plate 6.

Dans cette configuration, les premières et deuxièmes zones de fixation 8a, 8b sont reliées mécaniquement les unes aux autres à partir d'éléments de fixation 27 visibles sur la figure 4. Ces éléments de fixation 27 peuvent être des points de soudure, des rivets ou encore des vis coopérants avec des trous compris dans les premières et deuxièmes zones de fixation 8a, 8b. Les troisièmes zones de fixation 8c sont reliées mécaniquement avec l'organe de gonflage 5a par des éléments de fixation tels que des colliers de serrage situés autour de cet organe 5a qui coopèrent avec des trous compris dans ces troisièmes zones de fixation 8c ainsi que des vis dirigés vers l'intérieur du véhicule fixé sur la plaque 6 par un écrou borgne pour ne pas endommager le sac 5b.In this configuration, the first and second attachment zones 8a, 8b are mechanically connected to each other from attachment elements 27 visible on the figure 4 . These fixing elements 27 can be welding points, rivets or even cooperating screws with holes included in the first and second fixing zones 8a, 8b. The third fixing zones 8c are mechanically connected with the inflation member 5a by fixing elements such as clamps located around this member 5a which cooperate with holes included in these third fixing zones 8c as well as screws directed towards the interior of the vehicle fixed on the plate 6 by a cap nut so as not to damage the bag 5b.

Sur les figures 7A et 7B, la plaque 6 peut comprendre un orifice 25 dans lequel peut être agencé une connectique 26b ou au travers duquel un câble électrique 26a comprenant une telle connectique 26b peut être positionné. La connectique 26b étant ensuite connectée à l'ordinateur de bord du véhicule qui contrôle le déclenchement du dispositif d'airbag 4.On the Figures 7A and 7B , the plate 6 may include an orifice 25 in which a connector 26b can be arranged or through which an electrical cable 26a comprising such a connector 26b can be positioned. The connector 26b is then connected to the on-board computer of the vehicle which controls the triggering of the airbag device 4.

L'arrangement 1 comprend également une garniture de pavillon 7 qui permet de dissimuler le dispositif d'airbag 4 ainsi monté dans l'habitacle du véhicule.The arrangement 1 also includes a headliner 7 which makes it possible to conceal the airbag device 4 thus mounted in the passenger compartment of the vehicle.

En référence à la figure 9, l'invention concerne également un procédé de montage du dispositif d'airbag 4 dans le véhicule automobile. Ce procédé comprend une étape d'assemblage 31 de la plaque de montage 6 au dispositif d'airbag 4. Lors de cette étape 31, l'organe de gonflage 5a est relié mécaniquement à la plaque 6 au niveau des troisièmes zones de fixation 8c de cette dernière à partir des éléments de fixation, après un agencement de la première composante 29a du sac 5b dans la zone d'agencement 23 de la plaque 6.With reference to the figure 9 , the invention also relates to a method of mounting the airbag device 4 in the motor vehicle. This method comprises a step of assembling 31 of the mounting plate 6 to the airbag device 4. During this step 31, the inflation member 5a is mechanically connected to the plate 6 at the level of the third attachment zones 8c of the latter from the fastening elements, after an arrangement of the first component 29a of the bag 5b in the arrangement area 23 of the plate 6.

Le procédé prévoit ensuite une étape d'agencement 32 d'une partie du dispositif d'airbag 4 notamment l'organe de gonflage 5a, dans l'espace intérieur 3c de la poutre 2. Plus précisément, cette partie du dispositif d'airbag 4 peut correspondre à l'organe de gonflage 5a et à la partie de la première composante 29a du sac gonflable 5b dans cet espace intérieur 3c de la poutre de brancard 2. Cette étape 32 prévoit une insertion de l'organe de gonflage 5a et de la partie de la première composante 29a dans cet espace intérieur 3c en traversant l'ouverture 21. Ainsi, la plaque 6 est intercalée entre l'organe de gonflage 5a et la deuxième composante 29b du sac 5b.The method then provides for a step of arrangement 32 of a part of the airbag device 4, in particular the inflation member 5a, in the interior space 3c of the beam 2. More precisely, this part of the airbag device 4 may correspond to the inflation member 5a and to the part of the first component 29a of the airbag 5b in this interior space 3c of the stretcher beam 2. This step 32 provides for insertion of the inflation member 5a and the part of the first component 29a in this interior space 3c by crossing the opening 21. Thus, the plate 6 is interposed between the inflation member 5a and the second component 29b of the bag 5b.

Par la suite, le procédé prévoit une étape fixation 33 de la plaque 6 sur la doublure 3a lors de laquelle les premières et deuxièmes zones de fixation 8a, 8b sont reliées mécaniquement l'une à l'autre à partir des éléments de liaison 27.Subsequently, the method provides for an attachment step 33 of the plate 6 on the lining 3a during which the first and second attachment zones 8a, 8b are mechanically connected to each other from the connecting elements 27.

Le procédé prévoit ensuite une étape de montage 34 de la garniture de pavillon dans un habitacle du véhicule qui vient dissimuler à la vue des passagers situés dans l'habitacle, le dispositif d'airbag 4.The method then provides for a step of mounting 34 of the headlining in a passenger compartment of the vehicle which hides the airbag device 4 from the view of the passengers located in the passenger compartment.

En référence à la figure 4, un tel arrangement 1 du dispositif d'airbag 4 dans le véhicule permet de réduire l'encombrement du dispositif d'airbag 4 dans le véhicule et notamment dans l'habitacle du véhicule. En effet, la garniture de pavillon 7 peut ainsi avoir une forme qui offre un espace plus important dans l'habitacle que la garniture 13b relative à l'arrangement de l'état de l'art, du fait notamment de l'agencement d'une partie de ce dispositif d'airbag 4 dans l'espace intérieur 3c de la poutre de brancard 2. Ainsi, la tête 15 du passager du véhicule est éloignée selon un écart E3 de la garniture de pavillon 7 permettant ainsi une mobilité optimale de cette dernière dans l'habitacle. Cet écart E3 est supérieur à l'écart E2 de l'état de l'art entre la garniture du pavillon 13a et la tête 15 du passager. Ainsi le confort du passager s'en trouve amélioré.With reference to the figure 4 , such an arrangement 1 of the airbag device 4 in the vehicle makes it possible to reduce the size of the airbag device 4 in the vehicle and in particular in the passenger compartment of the vehicle. Indeed, the headlining 7 can thus have a shape which offers a greater space in the passenger compartment than the lining 13b relating to the arrangement of the state of the art, due in particular to the arrangement of part of this airbag device 4 in the interior space 3c of the stretcher beam 2. Thus, the head 15 of the passenger of the vehicle is moved away by a distance E3 from the headliner 7 thus allowing optimal mobility of this last in the passenger compartment. This difference E3 is greater than the difference E2 of the state of the art between the lining of the roof 13a and the head 15 of the passenger. Passenger comfort is thus improved.

La présente invention n'est pas limitée au mode de réalisation qui a été explicitement décrit, mais elle en inclut les diverses variantes et généralisations contenues dans le domaine des revendications ci-après.The present invention is not limited to the embodiment which has been explicitly described, but it includes the various variants and generalizations thereof contained in the field of claims below.

Claims (9)

  1. Arrangement (1) of an airbag device (4) notably of the curtain airbag type in a motor vehicle comprising a runner beam (2) of a roof of the vehicle provided with a runner reinforcement (3a) and a runner lining (3b) assembled together so as to form a closed interior space (3c) in which is arranged a part of the airbag device (4) notably an inflation unit (5a) of the airbag device (4), the runner lining (3b) comprising an opening (21) defined for an insertion of said part of the airbag device (4) into the interior space (3c).
  2. Arrangement (1) according to the preceding claim, characterized in that it comprises a mounting plate (6) capable of ensuring the fastening of the airbag device (4) to the runner lining (3b).
  3. Arrangement (1) according to either one of the preceding claims, characterized in that:
    - a mounting plate (6) comprises at least one second fastening zone (8b) provided for a fastening of said mounting plate (6) to the runner lining (3b), and/or
    - a mounting plate (6) comprises at least one third fastening zone (8c) where the inflation member (5a) is fastened to said plate (6), and/or
    - a mounting plate (6) comprises a layout zone (23) for a first component (29a) of an inflatable bag (5b) of the airbag device (4).
  4. Arrangement (1) according to any one of the preceding claims, characterized in that the plate (6) comprises an orifice (25) in which is arranged connection means (26b) or through which an electrical cable (26a) comprising such connection means (26b) can be positioned.
  5. Arrangement (1) according to any one of the preceding claims, characterized in that an opening (21) comprises an edge (24) notably coated with a protection material such as rubber.
  6. Arrangement (1) according to any one of the preceding claims, characterized in that an opening (21) comprises an edge (28) at which a guiding element (9) is defined.
  7. Method for mounting an airbag device (4) notably of the curtain airbag type in a motor vehicle comprising a step of arrangement (32) of a part of the airbag device (4) notably of an inflation member (5a), in an interior space (3c) of a runner beam (2) of a roof of the vehicle provided with a runner reinforcement (3a) and a runner lining (3b) assembled together so as to form said closed interior space (3c), the arrangement step (32) providing an insertion of a part of the airbag device (4) into this interior space (3c) by passing through an opening (21) of the runner lining (3b).
  8. Method according to the preceding claim, characterized in that it comprises:
    - a step of assembling (31) a mounting plate (6) with the airbag device (4), and/or
    - a step of fastening (33) the plate (6) onto the runner lining (3b).
  9. Vehicle comprising at least one arrangement (1) according to any one of Claims 1 to 6.
EP16809489.4A 2015-11-12 2016-11-14 Arrangement of an airbag device in a motor vehicle Active EP3374237B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1560830A FR3043613B1 (en) 2015-11-12 2015-11-12 ARRANGEMENT OF AN AIRBAG DEVICE IN A MOTOR VEHICLE
PCT/FR2016/052941 WO2017081429A1 (en) 2015-11-12 2016-11-14 Arrangement of an airbag device in a motor vehicle

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EP3374237A1 EP3374237A1 (en) 2018-09-19
EP3374237B1 true EP3374237B1 (en) 2020-01-01

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EP16809489.4A Active EP3374237B1 (en) 2015-11-12 2016-11-14 Arrangement of an airbag device in a motor vehicle

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EP (1) EP3374237B1 (en)
FR (1) FR3043613B1 (en)
WO (1) WO2017081429A1 (en)

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Publication number Priority date Publication date Assignee Title
FR3067673B1 (en) * 2017-06-14 2019-07-12 Renault S.A.S ARRANGEMENT OF A CURTAIN AIRBAG ON A VEHICLE BOX

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JP4656276B2 (en) * 2001-09-19 2011-03-23 トヨタ自動車株式会社 Head protection airbag device
US6793241B2 (en) * 2002-05-01 2004-09-21 Trw Vehicle Safety Systems Inc. Modular headliner and inflatable curtain assembly
KR100778579B1 (en) * 2006-10-12 2007-11-22 기아자동차주식회사 Mounting structure of curtain airbag for automobile

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FR3043613B1 (en) 2017-11-17
FR3043613A1 (en) 2017-05-19
EP3374237A1 (en) 2018-09-19
WO2017081429A1 (en) 2017-05-18

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